diff -up ./nspr/pr/src/pthreads/ptthread.c.s390x ./nspr/pr/src/pthreads/ptthread.c
--- ./nspr/pr/src/pthreads/ptthread.c.s390x	2012-03-01 18:25:40.922241580 -0800
+++ ./nspr/pr/src/pthreads/ptthread.c	2012-03-01 18:27:12.759116440 -0800
@@ -836,6 +836,9 @@ static void _pt_thread_death_internal(vo
 #if defined(DEBUG)
     memset(thred, 0xaf, sizeof(PRThread));
 #endif /* defined(DEBUG) */
+#if defined(__s390x__)
+    if (callDestructors)
+#endif
     PR_Free(thred);
 }  /* _pt_thread_death */